In ActiveSeam Comfort, two thread stitches are used in which only the outer needle and upper looper are threaded. To maximize the visual effect of an Infused stitch, two different colour needle threads are typically used. ActiveSeam Comfort for 195g Merino Woolīy definition, there are three versions of ActiveSeam: the Infused version of ActiveSeam, wherein the seam is sewn with three threads – one each in the inner needle, outer needle, and upper looper. The program was collaborated between Merrow’s engineering team, sewing team and machine building team. ‘ActiveSeam’ from Merrow Sewing Machine, USA heralded a new beginning of R&D and infused a new hope for the sewing machine manufacturers, a StitchWorld exclusive on this revolutionary seam.Ĭhallenged to create a perfect flat seam that would replace flatlock, the team at Merrow worked from 2008 until 2012 to refine and develop the ActiveSeam class of stitches four years ago. These different stitch types were developed over half a century ago and virtually no new stitch types were developed during the last half a century. Similarly, three-needle flatlock or bottom coverstitch is used for hemming of knitwear and five or six thread top and bottom coverstitch are used for butt or overlap joining of thick knitwear for avoiding bulk. For example, single needle lockstitch is used for joining two plies of woven fabric resulting in limited or no stretchability along seam and on the other hand, single needle chainstitch is used for joining two plies of knitted fabric resulting in stretch along seam. ActiveSeam Infused for Circular Knit Garmentsĭifferent stitch types are required to join different types of fabrics in different circumstances and for different end use.
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